WATCH: NIN Joined by Gary Numan at L.A. Gig!

Trent Reznor is living out some of his childhood fantasies on NIN’s farewell tour, inviting his musical touchstones up onstage for one last hurrah.

First, the rocker-cum-body-builder tapped former Bauhaus singer Peter Murphy for the band’s performance in New York, and Wednesday night in Los Angeles, he recruited synth-pop pioneer Gary Numan to sing a pair of tracks — including Numan’s 1979 hit “Cars”! Watch video below.

Numan and Reznor also performed “Metal,” a poppy electronica track from Numan’s 1979 album The Pleasure Principle, which Reznor said was very influential on NIN’s sound.B

But Numan’s cameo wasn’t the only surprise Wednesday night: NIN opened the set with a track-by-track run through their landmark 1994 album, The Downward Spiral, the second time the band has played the entire record on their farewell outing.